CVE-2024-53085
tpm: Lock TPM chip in tpm_pm_suspend() first
Summary
tpm: Lock TPM chip in tpm_pm_suspend() first
Original description
The description as published by the source.
In the Linux kernel, the following vulnerability has been resolved:
tpm: Lock TPM chip in tpm_pm_suspend() first
Setting TPM_CHIP_FLAG_SUSPENDED in the end of tpm_pm_suspend() can be racy
according, as this leaves window for tpm_hwrng_read() to be called while
the operation is in progress. The recent bug report gives also evidence of
this behaviour.
Aadress this by locking the TPM chip before checking any chip->flags both
in tpm_pm_suspend() and tpm_hwrng_read(). Move TPM_CHIP_FLAG_SUSPENDED
check inside tpm_get_random() so that it will be always checked only when
the lock is reserved.
Affected packages
Linux
Kernel
[{"type":"ECOSYSTEM","events":[{"introduced":"6.4.0"},{"fixed":"6.6.64"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.11.8"}]}]
Fix status by distribution
Fixed packages published by each distribution for this CVE
- BellSoft Alpaquita BELL-CVE-2024-53085 linux-lts
- Debian DEBIAN-CVE-2024-53085 linux
- Ubuntu UBUNTU-CVE-2024-53085 linux-hwe-edge
References
- advisory github.com
- advisory nvd.nist.gov
- package git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org